Medium 5.4Published Oct 30, 2025

CVE-2025-8849Denial of Service in danny-avila/librechat

Updated under an hour ago (Oct 27, 2026, 12:40 AM ET)

Does this affect you?

It affects danny-avila/librechat and 1 other product. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

Do this next

Start free and add your stack

Free account, 1 product

Every CVE for danny-avila/librechat

Exploited in the last 30 days

LibreChat version 0.7.9 is vulnerable to a Denial of Service (DoS) attack due to unbounded parameter values in the `/api/memories` endpoint. The `key` and `value` parameters accept arbitrarily large inputs without proper validation, leading to a null pointer error in the Rust-based backend when excessively large values are submitted. This results in the inability to create new memories, impacting the stability of the service.

CVSS: 5.4 MEDIUM (v3.0, CNA)CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L
Weakness (CWE): CWE-400
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: @huntr_ai
NVD analysis: Analyzed
Record last updated: Oct 31, 2025
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

danny-avila danny-avila/librechat danny_avila:librechat (from the name)	from unspecified before v0.8.0-rc2	CNA record
librechat librechat librechat:librechat	0.7.9	NVD

References

References

https://huntr.com/bounties/e9d9404c-cd19-4226-a580-9cba14b7d7d6	exploit, mitigation, third-party-advisory
https://github.com/danny-avila/librechat/commit/edf33bedcbb08c33e59df76f06454ed7efd896f9	patch

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.